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Rufina [12.5K]
2 years ago
8

Help me I really need help

Mathematics
1 answer:
Aleksandr [31]2 years ago
3 0

Answer:

Question 1 is A  (7/10) Question 2 is b (39/56)

Step-by-step explanation:

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Below

Step-by-step explanation:

You can use this formula to find the sum of an arithmetic series

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a) 53 = 5 + (n - 1) 3

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Sn = 17 / 2 (5 + 53)

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b) 98 = 7 + (n - 1) 7

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d) 41/3 = 2/3 + (n - 1) 1

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Sn = 14 / 2 (2/3 + 41/3)

    = 301 / 3 or 100 1/3  

Hope this helped! Best of luck <3

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